| Title |
Studies on Algae Causing Tastes and Odors in the Dongbok Reservoir - Detection of taste and odor substances in culture fluids and natural waters - |
| Authors |
배석진 ; 조영관 ; 이정전 ; 이진종 ( Seok Jin Bae ; Young Gwan Cho ; Jung Jun Lee ; Jin Jong Lee ) |
| Abstract |
In order to research the odor and taste substances naturally produced by algae in the surface water of the Dongbok reservoir, we studied relationship between algal biomass and taste and odors substances in culture fluids, which were analyzed by GC/MS. Alga producing musty or earthy odors in culture media was Anabeana macrospora, Oscillatora tenuis and Phormidium tenue. The slime-producing algae were Microcystis aeruginosa, and the algae causing fishy odor was Eudorina elegans. Odor of cucumber was detected in the culture media of Peridinium, and grassy odor was detected in Synedra acus. The musty odor substance, Geosmin(171ng/L), was mainly produced by Anabaena macrospora in the Dongbok reservoir at May, 1995 when the abundance was very large, 373,740cells/L(23,400 colonies). The products of Geosmin each their colony were 0.007ng/colony. In the culture fluids, Anabaena macrospora and Oscillatoria animals produced geosmin, and Oscillatoria tenuis and Phormidium tenue produced 2-MIB. When chlorinated in culture fluids of algae, about 80% of total amount of odor and taste substances was increased. It may be caused by the release of taste and odor substances inside algae body. |